body {
    background-color: #1b1b1b;
    color: #eeeeee;
}

    body div {
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        font-weight: bold;
        font-size: 45px;
        position: absolute;
        top: 50%;
        left: 50%;
        -moz-transform: translateX(-50%) translateY(-50%);
        -webkit-transform: translateX(-50%) translateY(-50%);
        transform: translateX(-50%) translateY(-50%);
    }